Subscriptions to its suite of identity software products helped boost revenues 40 percent in 2015 from the prior year. The company also mentions it is on track to hit $100 million in annual recurring revenues this year.

That translates to at least $8.3 million in monthly subscription fees.

Ping is private and not required to report actual income or revenues. But it shared some growth numbers from last year, including that 20 percent of its bookings came from international customers and it added 135 employees. More details are available in Ping’s earnings release.

Growth came especially from multi-factor authentication products, which require more than just a password for people to access accounts and files. Such products could require a fingerprint scan, an approved smartphone or a one-time code.

Today’s new feature from Denver’s Ping Identity makes it one step easier to continue collaborating with co-workers on your smartphone securely after you leave the office.

Ping partnered with Sprint to let people use a single username and password to access Google’s business apps in a way that meets office IT department’s security requirements. Called PingOne, the service specializes in keeping data in the cloud secure so business users can continue to collaborate on their smartphones. More details at www.sprint.com/googleapps.

Tamara Chuang covers personal technology and local tech news for The Denver Post. She previously spent 10 years doing the same thing for The Orange County Register before taking a hiatus to move here and become a SAHM to a precocious toddler.